<ion-header>
  <ion-navbar>
    <ion-title>扫描中……</ion-title>
  </ion-navbar>
</ion-header>
<ion-content no-scroll [ngClass]="{'qrscanner':isShow}">
  <div [ngClass]="{'qrscanner-area':isShow}">
  </div>
  <div [ngClass]="{'through-line':isShow}"></div>
  <div class="button-bottom">
    <button (click)="toggleLight()" ion-fab class="icon-camera" margin-right>
      <ion-icon name="flash"></ion-icon>
    </button>
    <!-- <button (click)="toggleCamera()" ion-fab class="icon-camera">
      <ion-icon name="reverse-camera"></ion-icon>
    </button> -->
  </div>
</ion-content>